uzyskać listę wszystkich filmów i miniatury
Z pomocą powyższej odpowiedzi dostałem to działa ..
Dzięki @Nikhil Bansal,
bardzo mi pomógł, ale nadal wymaga kilku godzin, aby wykonywalnego kodu, gdy brakuje kilku rzeczy w swojej odpowiedzi
Więc chciałbym podzielić się moją pełny kod roboczy
1.just dodać ram AssetsLibrary, AVFoundation i MediaPlayer.
2. AssetBrowserItem.h i AssetBrowserItem.mhere
3.Use poniżej kodu listę wszystkich filmów z urządzenia z systemem iOS dostać lib
4.run aplikacji i see log filmy szczegóły
#import "HomeViewController.h"
#import <AssetsLibrary/AssetsLibrary.h>
#import <MediaPlayer/MediaPlayer.h>
#import <AVFoundation/AVFoundation.h>
#import "AssetBrowserItem.h"
@interface HomeViewController()
@property (nonatomic, strong) ALAssetsLibrary *assetsLibrary;
@property (nonatomic, strong) NSURL *videoURL;
@property (nonatomic, strong) MPMoviePlayerController *mpVideoPlayer;
@property (nonatomic, strong) NSMutableArray *videoURLArray;
@property (nonatomic, strong) NSMutableArray *assetItems;
@property (nonatomic, strong) NSMutableDictionary *dic;
@end
@implementation HomeViewController
@synthesize assetsLibrary, assetItems,dic;
@synthesize videoURL,videoURLArray, mpVideoPlayer;
- (void)viewDidLoad
{
[super viewDidLoad];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
#pragma mark - Show Video List Methods
- (IBAction)showVideoList:(id)sender
{
[self buildAssetsLibrary];
}
- (void)buildAssetsLibrary
{
assetsLibrary = [[ALAssetsLibrary alloc] init];
ALAssetsLibrary *notificationSender = nil;
videoURLArray = [[NSMutableArray alloc] init];
NSString *minimumSystemVersion = @"4.1";
NSString *systemVersion = [[UIDevice currentDevice] systemVersion];
if ([systemVersion compare:minimumSystemVersion options:NSNumericSearch] != NSOrderedAscending)
notificationSender = assetsLibrary;
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(assetsLibraryDidChange:) name:ALAssetsLibraryChangedNotification object:notificationSender];
[self updateAssetsLibrary];
}
- (void)assetsLibraryDidChange:(NSNotification*)changeNotification
{
[self updateAssetsLibrary];
}
- (void)updateAssetsLibrary
{
assetItems = [NSMutableArray arrayWithCapacity:0];
ALAssetsLibrary *assetLibrary = assetsLibrary;
[assetLibrary enumerateGroupsWithTypes:ALAssetsGroupAll usingBlock:^(ALAssetsGroup *group, BOOL *stop)
{
if (group)
{
[group setAssetsFilter:[ALAssetsFilter allVideos]];
[group enumerateAssetsUsingBlock:^(ALAsset *asset, NSUInteger index, BOOL *stop)
{
if (asset)
{
dic = [[NSMutableDictionary alloc] init];
ALAssetRepresentation *defaultRepresentation = [asset defaultRepresentation];
NSString *uti = [defaultRepresentation UTI];
videoURL = [[asset valueForProperty:ALAssetPropertyURLs] valueForKey:uti];
mpVideoPlayer = [[MPMoviePlayerController alloc] initWithContentURL:videoURL];
NSString *title = [NSString stringWithFormat:@"%@ %lu", NSLocalizedString(@"Video", nil), [assetItems count]+1];
[self performSelector:@selector(imageFromVideoURL)];
[dic setValue:title forKey:@"VideoTitle"];//kName
[dic setValue:videoURL forKey:@"VideoUrl"];//kURL
AssetBrowserItem *item = [[AssetBrowserItem alloc] initWithURL:videoURL title:title];
[assetItems addObject:item];
[videoURLArray addObject:dic];
NSLog(@"Video has info:%@",videoURLArray);
}
NSLog(@"Values of dictonary==>%@", dic);
//NSLog(@"assetItems:%@",assetItems);
NSLog(@"Videos Are:%@",videoURLArray);
} ];
}
// group == nil signals we are done iterating.
else
{
dispatch_async(dispatch_get_main_queue(), ^{
//[self updateBrowserItemsAndSignalDelegate:assetItems];
// loadImgView.hidden = NO;
// [spinner stopAnimating];
// [loadImgView removeFromSuperview];
//selectVideoBtn .userInteractionEnabled = YES;
});
}
}
failureBlock:^(NSError *error)
{
NSLog(@"error enumerating AssetLibrary groups %@\n", error);
}];
}
- (UIImage *)imageFromVideoURL
{
UIImage *image = nil;
AVAsset *asset = [[AVURLAsset alloc] initWithURL:videoURL options:nil];;
AVAssetImageGenerator *imageGenerator = [[AVAssetImageGenerator alloc] initWithAsset:asset];
imageGenerator.appliesPreferredTrackTransform = YES;
// calc midpoint time of video
Float64 durationSeconds = CMTimeGetSeconds([asset duration]);
CMTime midpoint = CMTimeMakeWithSeconds(durationSeconds/2.0, 600);
// get the image from
NSError *error = nil;
CMTime actualTime;
CGImageRef halfWayImage = [imageGenerator copyCGImageAtTime:midpoint actualTime:&actualTime error:&error];
if (halfWayImage != NULL)
{
// cgimage to uiimage
image = [[UIImage alloc] initWithCGImage:halfWayImage];
[dic setValue:image forKey:@"ImageThumbnail"];//kImage
NSLog(@"Values of dictonary==>%@", dic);
NSLog(@"Videos Are:%@",videoURLArray);
CGImageRelease(halfWayImage);
}
return image;
}
@end
Tak, jest to możliwe, ale przede wszystkim powiedz mi, co próbowałeś dotychczas? –
Chcę pobrać cały plik wideo z iPhone'a (nagrany i inny plik wideo przechowywany w iPhonie). – dheeru